For the love of a tractor engine: The life and times of the 18R-G

[SilverRA23]

Interested to hear the responses.

The CCCVic club car may need a simple baffled sump soon, so we're all ears to solutions.

My fabby put a "ring" around the oil pick up, with gates/holes in it. Looks good, time will tell if it works

I will try and get a photo of it before the engine goes back together.

[JustenGT8]

Anyone that has a proven sump design they could share, it would be appreciated. I feel the need to go Accusump as insurance on this motor when loaded into my next car. Any thoughts??

Rgds, Willofan

I went thru a few sump designs trying to sort the dreaded 18RG surge. A combo of things gives a good result. Add some wings for extra capacity, i ran a TRD oil pump for higher flow/pressure (custom design being tested now), and some baffling. My preferred baffle design is a very simple set of vertical plate in the form of an X with the pickup at the intersection.....no matter which way the oil is sloshing around in the sump it must pass the pickup. There's a description on here somewhere of an improved pickup design as well.

That should do you for most applications. Of course Accusump is a good safety feature if you have the dollars and are comfortable with the complexity.

[river]

Hi,

Yes, the X-baffle is a simple yet effective design. Couple that with the better oil pick-up that is being built and you should be much better off.

On Trini I have got a "low oil pressure" switch/sensor fitted, which is controleld by the Autronics ECU, and when the oil pressure drops low it will automatically cut the engine revs right down to preserve the engine. Of course, not that I think this will happen often, as there are no oil leaks and Trini will be only potting about at road speed limits - but it is good to have that extra insurance.

seeyuzz
river

[timbosaurus]

I'm thinking of fabricating a 'bowl', based off this.



ie: some wings on the side, some hinged doors to isolate the wings, and a ring around the pickup like Karls (thanks for the link zop!)



If the high volume 18RG pumps work out, I'd use that, and maybe Mr X could be added to the bowl as well.

[o_man_ra23]

I pulled one of my pistons that was low on compression yesterday. Basically, Tony Greig came around with the car keys to test out the ringlands

So... I am going to need to build a whole new bottom end for this beast, and in doing so will go 92mm overbore, with Arias 8.5:1 forged pistons, and CrMo rods. The pistons have to come from the US, have a lead time of 4-6 weeks, and similar for postage time. Quote I have so far is US$640 delivered for a set including rings, gudgeon pins and pin clips, but I will be finding out if they are willing to drop that price if more are purchased (allowing for differences in compression, but not differences in diameter). Once I have an answer on that, assuming it is positive, I will ask the board if I can do a group buy on them. That will be advertised and linked in my sig, so keep an eye on it if you are interested. I want to get this underway soon if it is going to happen.

Witzl, I am also going to need a set of rods, so if you would be able to PM me details on the ones you got made, that would be great (including cost so I can get an idea of what I am up against). I may try and do a group buy on them too.

The other items I will use are main studs (I believe 22R are correct fitment, please let me know if I am wrong), and head studs. Paeco will do customs as a one off for about US$300 landed, but if anyone else knows what head studs are available, please divulge.

[old_school_jap1]

Me re-posting this multiple times regarding studs doesn't seem to be getting through; http://www.toymods.net/forums/showth...164#post984164

[Javal]

Also interested in rods and headstuds as per your thread.

[JustenGT8]

I pulled one of my pistons that was low on compression yesterday. Basically, Tony Greig came around with the car keys to test out the ringlands

So... I am going to need to build a whole new bottom end for this beast, and in doing so will go 92mm overbore, with Arias 8.5:1 forged pistons, and CrMo rods. The pistons have to come from the US, have a lead time of 4-6 weeks, and similar for postage time. Quote I have so far is US$640 delivered for a set including rings, gudgeon pins and pin clips, but I will be finding out if they are willing to drop that price if more are purchased (allowing for differences in compression, but not differences in diameter). Once I have an answer on that, assuming it is positive, I will ask the board if I can do a group buy on them. That will be advertised and linked in my sig, so keep an eye on it if you are interested. I want to get this underway soon if it is going to happen.

Witzl, I am also going to need a set of rods, so if you would be able to PM me details on the ones you got made, that would be great (including cost so I can get an idea of what I am up against). I may try and do a group buy on them too.

The other items I will use are main studs (I believe 22R are correct fitment, please let me know if I am wrong), and head studs. Paeco will do customs as a one off for about US$300 landed, but if anyone else knows what head studs are available, please divulge.

Bummer, so rooted rings and they rooted the bore as well?

witzl's rod will be no good for you as custom length, therefor requiring custom pistons. just get your rods destressed and shot peened....i revved mine to 8000rpm on a regular basis with no issues and they also saw 30psi upon occasion...i just don't think you can break them. Upgrade your rod bolts if possible to ARP though.

[river]

Hi,

Owen, that's a bummer.. sorry to hear that she needs a pretty hefty rebuild, with subsequent cost.

That is why I may be regarded as a tad girlie, but will probably keep Trini on low boost all the time, with the rev limitier on.

seeyuzz
river

[JustenGT8]

just a tad?

[o_man_ra23]

Old School, I don't really want to mill down head studs. Once made, they should be heat treated, and milling them disturbs that. But thanks for the redirection, as it shows what mains I need.

Justen, thanks for the advice on the rods, know anyone worth sending a set of rods to?? I don't trust anyone in town up here. Heard bad stories about EVERY workshop. Oh, and the rings and bores were fine, just the pistons had big cracks.

[old_school_jap1]

He says to mill down the head, not the stud i believe

[Willofan]

[QUOTE=o_man_ra23;1095076]I pulled one of my pistons that was low on compression yesterday. Basically, Tony Greig came around with the car keys to test out the ringlands

So... I am going to need to build a whole new bottom end for this beast, and in doing so will go 92mm overbore, with Arias 8.5:1 forged pistons, and CrMo rods.


Hey o_man_ra23, Sorry to hear about your mis-fortune and the need to rebuild the motor. I am always hesitant to go to 92mm bores as once it goes, it's gone - no more chances to go to the next bore size.

The ARP bolts on standard dressed rods from what I can tell will give the same performance and endurance as the more expensive rods. Argo's make a good H beam rod for 18RG's and they are local in outer Sydney. I think they are about $1400 for a set.

Arias Pistons are good too, but I managed to fry a set early last year, not sure wether it was octane or timing and destroyed crank journals at the same meeting due to lack of oil getting to the pump, hence my call out for a good sump.

Keep us informed on your progress.

Rgds, Willofan

[7t5-27]

He says to mill down the head, not the stud i believe

Here is a picture from a 3tgte that used the mitsu head studs with the head towers(for lack of better name) milled to allow the studs to work. You need to go to post 188 on this link.

http://www.toymods.net/forums/showthread.php?t=31201&page=10

I hope I did this correctly the pic and info are on the 3tgte tech thread if the link doesn't work Good Luck Be safe
Greg

[JustenGT8]

Old School, I don't really want to mill down head studs. Once made, they should be heat treated, and milling them disturbs that. But thanks for the redirection, as it shows what mains I need.

Justen, thanks for the advice on the rods, know anyone worth sending a set of rods to?? I don't trust anyone in town up here. Heard bad stories about EVERY workshop. Oh, and the rings and bores were fine, just the pistons had big cracks.

B.E.R.C.O. in Canberra did mine but that was many years ago. I haven't needed engine machine work since then so i can't recommend anyone in particular.

Try Ed or Linden for advice as they are always building weird engines that need quality machine work.